Polar and Longitudinal Magnetooptical Kerr Effects in Magnetic Film/Spacer/Magnetic Substrate System

摘要: The paper deals with the electromagnetic theory of longitudinal and normal incidence polar magnetooptical Kerr effects (MOKE) in sandwich structures consisting a magnetic film on thick substrate separated by nonmagnetic spacer. These are employed fundamental studies exchange coupling, tunnel magnetoresistance, spin polarized current,etc., as well design magnetoelectronic devices,e.g., random access memories. results expressed terms Jones reflection matrix. This makes analysis observed MOKE various experimental set-ups easier. To first order off-diagonal elements permittivity tensor, analytical expressions approximate obtained using rigorous matrix formalisms little loss accuracy, provided quadratic offdiagonal negligible. total is sum components originating from substrate, respectively. enter different phases may be identified separately proper control polarization state photon energy incident radiation, angle incidence, spacer thickness, radiation wavelength. formulae derived without any restriction thickness. However, for rapid evaluation trends response also treated under assumption that thickness much smaller than